Test Bank on Human Physiology An Integrated Approach 6th Edition by
Silverthorn Human Physiology An Integrated Approach, 6e (Silverthorn) All
chapters Complete (1 – 26) 100 + questions and answers
1
,A patient’s cells are unable to produce ATP efficiently due to damaged
mitochondria. Which cellular process will be most directly affected?
A. Protein synthesis
B. Active transport
C. DNA replication
D. Diffusion
Correct Answer: B
Rationale: Active transport requires ATP; mitochondrial dysfunction reduces
cellular energy supply.
A neuron is exposed to a drug that blocks voltage-gated sodium channels. What is
the expected effect?
A. Increased action potentials
B. No change in signaling
C. Failure of action potential initiation
D. Increased calcium release
2
,Correct Answer: C
Rationale: Sodium influx is essential for depolarization and action potential
generation.
A patient is dehydrated. Which hormone will be released to conserve water?
A. Insulin
B. ADH
C. Thyroxine
D. Aldosterone
Correct Answer: B
Rationale: ADH increases water reabsorption in the kidneys.
A red blood cell is placed in a hypertonic solution. What will happen?
A. It will swell and burst
B. It will shrink
3
, C. No change
D. It will divide
Correct Answer: B
Rationale: Water moves out of the cell into the hypertonic environment.
Which ion is primarily responsible for the resting membrane potential of
neurons?
A. Sodium
B. Calcium
C. Potassium
D. Chloride
Correct Answer: C
Rationale: Potassium leak channels dominate resting membrane potential.
A patient has low thyroid hormone levels. What symptom is most expected?
4
Silverthorn Human Physiology An Integrated Approach, 6e (Silverthorn) All
chapters Complete (1 – 26) 100 + questions and answers
1
,A patient’s cells are unable to produce ATP efficiently due to damaged
mitochondria. Which cellular process will be most directly affected?
A. Protein synthesis
B. Active transport
C. DNA replication
D. Diffusion
Correct Answer: B
Rationale: Active transport requires ATP; mitochondrial dysfunction reduces
cellular energy supply.
A neuron is exposed to a drug that blocks voltage-gated sodium channels. What is
the expected effect?
A. Increased action potentials
B. No change in signaling
C. Failure of action potential initiation
D. Increased calcium release
2
,Correct Answer: C
Rationale: Sodium influx is essential for depolarization and action potential
generation.
A patient is dehydrated. Which hormone will be released to conserve water?
A. Insulin
B. ADH
C. Thyroxine
D. Aldosterone
Correct Answer: B
Rationale: ADH increases water reabsorption in the kidneys.
A red blood cell is placed in a hypertonic solution. What will happen?
A. It will swell and burst
B. It will shrink
3
, C. No change
D. It will divide
Correct Answer: B
Rationale: Water moves out of the cell into the hypertonic environment.
Which ion is primarily responsible for the resting membrane potential of
neurons?
A. Sodium
B. Calcium
C. Potassium
D. Chloride
Correct Answer: C
Rationale: Potassium leak channels dominate resting membrane potential.
A patient has low thyroid hormone levels. What symptom is most expected?
4
